Door-operating mechanism



Dec. 31, 1929.

s. B. HASELTI NE DOOR OPERATING MECHANISM Filed June 10, 1926 2 Sheets-Sheet Dec. 31, 1929.

s. B. HASELTINE 1,741,62 7

DOOR OPERATING MECHANISM Filed June 10, 1926- 2 Sheets-Sheet 2 Patented Dec. 31, 1929 UNITED STATES PATENT OFFICE s'IAGY B. HASELTINE, F GHICAGO, ILLINOIS, ASSIGNOR T0 w. H. MINER, IN'Q, OF

" CHICAGO, ILLINOIS, A CORPORATION or DELAWARE DOOB-OPERATING MECHANISM Application filed June 10,

This invention relates to door operating mechanisms.

One object of the invention is to provide a simple and eflicient arrangement of door operating mechanism especially adapted for refrigerator cars, for forcing the doors to tightly closed position, for holding the same closed, and which will also be effective in starting the door opening operation.

Another object of the invention is to pro vide a mechanism of the character described, especially designed for operating doors of the swinging type, and including a two part operating mechanism comprising a bar pivotally mounted upon the door and having one end swingably engaging a keeper mounted on the door frame adjacent the upper edge of said door, and having associated with its opposite end a link confined to reciprocable movement and adapted to be projected beyond the lower edge of the door to coact with a keeper mounted adjacent said edge, and which may be retracted to withdraw the end thereof to a position within the confines'of the door so as to clear loading platforms when the door is open, in conjunction with actuating means for simultaneously operating said link and bar to cause traverse of the keeper: to effect movement of the door in opening and closing directions.

Other objects of the invention Will more fully and clearly appear from the description and claims hereinafter following.

In the drawings forming a part of this specification, Fig. '1 is a side elevational view of a portion of a refrigerator car, showing my improvements in connection therewith. Fig. 2 is an enlarged vertical,'sectional view, partly broken away, corresponding substantially to the line 2+2 of Fig. 1. And Fig. 3 is a horizontal, sectional view through the upper keeper and end of the operating bar substantially on the line 3-3 of Fig. 1.

In said drawings, the car is shown as provided with a door frame 10 and two pivoted doors 11 and 12, said doors having bevelled meeting edges in the usual manner. As is customary in refrigerator cars, insulation or packing is employed between the meeting edges of thedoors themselves, and around 1926. Serial No. 115,058.

the sides and tops thereof. The doors 11 and 12 are mounted to swing about vertical axes, being supported by suitable hinges 13-13.

As shown, the improved door operating mechanism comprises broadly, operating means A keepers B-B; and actuating mechanism C The operating means A'include a pivoted bar lt and an operating link 15. The bar 14 is pivotally mounted intermediate its ends as indicated at 16 at a point closer to the top edge of the door than to the bottom edge thereof, and adjacent the forward edge of said door, by means of a suitable bracket secured to the door. The upper end of the bar 14 projects he ond the top edge of the door, and is suitably formed at its end to engage the top keeper B. The swinging movement of the upper end of the bar is limited by means of a two part guide bracket 17 secured to the door 12 adjacent the upper forward edge thereof by suitable bolts. The link 15 is connected to the lower end of the bar lat by the actuating mechanism as here inafter more fully referred to. The lower end of the link 15 is adapted to be projected beyond the lower edge of the door for cooperation with the lower keeper B, the lower end of the link being provided with a lateral extension 18 which with the end of the link provides an upwardly inclined cam face 19, whilethe rear face of the extension is also inclined upwardly to provide an inner cam face 20. The lower end of the link 15 ex tends through a suitable housing indicated at 21 which is provided with a slot 22 to permit combined longitudinal and limited lateral movement of the link, said housing being offset as indicated at 23 to permit the entrance of the enlarged end of the link which engages the lower keeper B. Said housing is also provided with a catch 40 adapted to cooperate with the actuating mechanism as hereinafter explained.

The keepers B are two in number, one of the same being secured to the door frame adj acent the upper edge of the door 12, and the lower keeper B secured to the door frame adjacent the lower edge of said door. The lower keeper B includes a base plate prokeeper B also has a lateral extension at one side as indicated at 29 upon which is mounted a pivoted latch 30, adapted to coact with a wear plate 31 secured to the lower right hand corner of the door 11 to hold the door 11 in locked position when the same is closed. The upper keeper B includes portions formed to provide a cam slot 300, the walls of which are disposed in parallel relation and provide scam surfaces disposed in a horizontal direction and inclined outwardly from the plane of the door frame and opening inwardly from the free edge of the door 12, said cam surfaces being adapted to coact with the upper .end of the swinging bar 14.

The inner ends of the link 15 and the bar 14 are operatively connected by the actuating mechanism C. Said mechanism is mounted upon a plate 32 secured to the door 12 by suitable means, said plate being provided with a vertically disposed undercut slot 33 opening in an upward direction. The slot 33 slidably and pivotally retains a headed pin 34 forming part of the lever 35. The

lever 35 is provided with lateral eccentric extensions 36 and 37, the extension 37 being pivotally connected to the upper end of the link 15 while the extension 36 is pivotally connected to the lower end of the bar 14, the arrangement being such that operation of the lever effects movement of both the bar 14 and link 15. A pivoted hooked latch 38 is mounted upon the door 11 and is adapted to automatically coact with a rib 39 on the :handle of the lever 35 for locking the same in position, said rib being adapted to ride over the catch 40 when the lever 35 is swung downwardly so as to lock the handle in vertical position and maintain the link 15 in elevated position.

In operation, assuming the doors to be closed, and the operating mechanism in locked position as indicated in full lines of Fig. 1, and it is desired to open the doors, the lever 35 is first disconnected from the looking mechanism and moved downwardly toward the dotted line position indicated in Fig. 1. This movement of the lever efiects clockwise swinging movement of the lower end of the bar 14, causing the upper end of the bar to traverse'the horizontally arranged cam surfaces of the upper keeper B, and simul taneo usly with this movement the link 15 is swung by the lever and at the same time ele vated to effect traverse of the vertically disposed cam surfaces of the lower keeper B, this movement of the mechanism forcing the door in an opening direction, and retracting the lower end of the link 15 to a position substantially within the edge of the bottom of the doorso that the same cannot interfere with loading platforms, the weight :of the lever 35 in its depending position serving to maintain the end of the link 15 in its retracted position and when desired the handle of the lever may be swung until the rib 39 moves into engagement with the catch 40 thereby positively locking the handle in vertical position. -After-the door 12 has been fully opened the latch 30 securing the door 11, may be then disconnected, and the door 11 opened.

When it is desired to close the doors, the I door 11 is first swung nearly closed, after which the door 12 is swung closed to such an extent that the ends of the bar 14 and link 15 are in position to enter the upper and lower keepers B-B. The lever 35 is then swung upwardly which results in anti-clockwise swinging of the upper end of the bar 14, and combined swinging and downward longitudinal movement of the link 15, causing the engaging ends of the bar 14 and link 15 to traverse the keepers and force the door to fully closed position, the swinging movement of the lever bringing the same into engagement with the latch 38. The latch 30 then may be turned into position against the plate 31 on the door 11.

While I have herein shown and described what I now consider the preferred manner of carrying out the invention, the same is merely illustrative, and I contemplate all changes and modifications that come within the scope of the claims appended hereto.

I claim:

1. In a door operating mechanism, the combination with a door frame and a pivoted door; of operating means including a member pivotally mounted on said door, and a second member reciprocably mounted on said door, each of said bars having an actuating portion rigid therewith; lever means for simultaneously imparting swinging movement to said first bar and reciprocable movement to said second bar to lift the same above the lower edge of the door when the lever means is operated to open the door and project the same beyond the lower edge of the door when the lever means is operated to close the door; and keeper means mounted on the door frame and adapted to be engaged by the'opposite actuating portions of the first and second named bars to effect movement of said door in opening and closing directions. f

. 2. In a door operatingv mechanism of the character described, the combination with a door frame and pivoted door; of operating means mounted on said door comprising a bar pivoted intermediate its ends and having one end projecting beyond the upper edge of said door, and a second operating bar reciprocably mounted on said door and adapted to project below the lower edge thereof when said door isclosed; keeper means ad apted to cooperate with the projecting ends of said operating means; means including a lever for simultaneously swinging said bar and causing longitudinal movement of said link to effect traverse of said keepers to open said door and to retract the end portion of said link to a position within the confines of said door, and co-operating latch means on the lever and door for retaining said reciprocable bar in elevated position when said door is open.

3. In a door operating mechanism of the character described, the combination with a door frame and a pivoted door; of a keeper secured to said frame adj acent the upper edge of said door and provided with spaced cam surfaces, and the lower keeper mounted on said frame adjacent the lower edge of said door and provided with spaced cam surfaces extending at an angle to said first cam surfaces; an operating bar pivotally mounted upon said door intermediate its ends and having its upper end projecting beyond the upper edge of said door and adapted to engage the cam surfaces of said upper keeper; an operating member mounted for longitudinal movement at the lower portion of said door, and having one end adapted to project below the lower edge of said door to engage the cam surfaces of the lower keeper; and a lever having a lost motion pivotal connection with the door and provided with eccentric extensions, one of which has a pivot connection with the lower end of the pivoted operating member, and the other of which has a pivotal connection with the upper end of the other operating member.

In witness that I claim the foregoing I have hereunto subscribed my name this 20th day of May, 1926.

STACY B. HASELTINE. 

